Beam compass



May 17, 1927. 1,629,328

R. B. WARE BEAM COMPASS Filed March 1 1926 INVENTOR.

M7 d l.

ATTORNEY.

Patented May 17, 1927.

uurrso srarss PATENT OFFICE.-

IRODNEY B. WARE, OF WADSWORTH, OHIO.

BEAM ooMrAss.

Application filed March 18, 1926. Serial No. 95,752.

, range of application.

Another object is to provide such an instrument with means for utilizing practically any ordinary pencil, ruling-pen, or scriber, thus obviating the need of furnishing special implements for marking pur poses. Still another object is to furnish the beam-compass with a convenient and im proved holder for the centering spurs.

A further object is to afford means, in a beam-compass. whereby the movable parts and members not only can be adjusted easily and quickly, but after adjustment can be held securely and so as not to slip.

Nearly all of the parts and members of this instrument are interchangeable, which is an obvious advantage.

Other objects and advantages will appear in the course of the following description.

I attain the objects and secure the ad 'autages of my invention by the means illustrated in the accompanying drawings, in which I Figure 1 is a front elevation of a beamcompass which embodies a practical form of my invention, intermediate portions of the beams or rods being broken out to 'economize space; Fig. 2, atop plan of said beamcompass, but with the parts and members disposed as in the following view, intermediate portions of the rods being again broken out, and also in the next View; Fig. 3, a front elevation, with parts in section, of the instrument, the spur holder being here clamped to the lower rod, while in the first view said holder is clamped to the upper rod; Fig. 4, an elevation of the outer end of the lower rod, showing the markingimplement holder secured thereto by a. clamp, which clamp and holder are in partial section; Fig. 5, a side elevation in partial section. of the spur holder; Fig. 6, an end elevation of said last-named holder, and, Fig. 7, an opposite end elevation thereof.

Similar reference characters designate similar parts throughout the several views;

This beam-compass comprises upper and under beams, bars, or rods 1 and 2, respectively, two rod clamps and two implement holder clamps, a spur holder, and av marking-implement holder, all of which are. de-

scribed in detail below. 1

The rods 1 and 2 are generallycylindrical, and in such case the upper rod is chamfered on top, as represented at 3, and the lower rod is chamfered on the bottom and back side, as respectively represented at a and 5. The outer terminal of the rod 2' is bent" rearwardly and then continued a short distance in parallel relation with the mainfportion of said rod to form an arm 6. In the present example inch scales are delineated on the front sides of the rods 1 and 2, starting with 0 near the outer terminal of the upper rod, and ending with 17 near the inner terminal thereof, and starting with 1 on the lower rod some distance from the bent terminal thereof, and ending with 9 near the opposite terminal; and a fractional inch' scale is delineated on top of the arm 6, as clearly shown in Fig. 2. p

The above-mentioned clamps are alike except that in each of the members thereof which receive the rods 1 and 2 are two parallel openings therethrough for that purpose,

while in each of the members thereof which receive one or the, other of said rods or the arm 6 and oneof the implement holders are two openings therethrough arranged at right-angles to each other. Otherwise a description of one clamp applies to all. Each clamp consists in part of a cylindrical slide 7 or 8, the former having the parallel openings therein, one above the other,'for the rods 1 and 2, and the latter having the openings therein, one above the other, which are" at right-angles to each other and adaptedto receive either of said rods, the arm 6, and the part of either of the implement holders that is made especially to fit one or the other of said openings. Both slides 7 are arranged vertically on the rods 1 and 2, one of the slides 8 is-arnnged vertically on the arm 6, with saidarmfpassing through the lower opening in said last-named slide, and the other slide 8 is arranged horizontally on one or the other of said rods, with the rodinthe rear opening.

gripping rings 9, a pair of springs 10, and

a pain. of, knurled nuts 11. Each. slide at. eachend. is. turned. down, as. represented at 12, to form a. centeringpart torpone ot the ringsS), and. a screw-threaded projection 13 extends tromsueh end to receive one of the nutsll The openings through the slides 7;

slides? and8, and thereby nu se said slides.

to grip tightly said rods and other. parts, and allot these parts and mombersto l e securely clamped together. i-elease of the parts is effected simply by looseningthe nuts 11.

To relatively adjust the rods 1 and 2 it is preferable to loosen the upper nut 11 of the leftrhand rod clamp and the lower nutv 11 ofthe rightrhand rod. clan'ip, leaving.the.

other twonuts of said clamps tight. The rods can now be moved, independently oi each other endwise to whatever extent may be desired, within the lim-itot the instru-v ment. After adjustment the loose nuts. are retightened. To, remove the left-hand clamp slide 8 fromthe correspondingend 0t thevupper rod 1 (Fig, 1) and, placeit onthe lower rod 2 (Figs. 2 and 3), it is necessary, after taking said slidefromthe upper rod, to loosenboth nuts. 11 on the left-hand slide 7 and remove said slide from both rods, and. then toplace said first-named slide on said lower rod, said second-named slide on both rods, and re tighten said nuts.

The spur holder, of which mention has beenmade,comprises a round rod 14, of approximately the sa me diameter of either, of the rods 1 and 2, which has a knurled head 15, and is bored and split at the ends substantially as shown, the slits in the upper and lower terminalsbeing respectively indi ted by. the numerals 1.6 and 17 and the In addition to the slide 7 (or 8), each of. the aforesaid clamps consists of. a pair of.

upper and lower bores or chambers by the numerals 18 and 19. At 20 is represented a spur which is in thevchamber 18, and at 21 is represented a spur which, is inthe chamber 19. The chamber 18 is in the axial center of the holder 14, while the chamber 19 is cccentri cally situated therein.

The sp'urQO-isofa size and shape to tit withineither chamber 18 or 19, so also is the spur'21. The spur 20 is for use in marking metal, while. the, spur 21 is for centering the instrument when employed in drawing on paper, Either spur may be readily substituted tor theother inoperative position,

the one not in usebeing stored inthe-upper' chamber 18. The split terminals, of the holder Minnction in the customary manner for holding the spur-sin place ;Each; spur, has notches 22-22- therein adjacent to. the

ends'thereof, fOll'rilllGil'lSQlhlOll of the thumb.- nail to fac litate withdrawingthe-spur fromv its. chamber. At the inner end'bti each chamber. 18 and 19 1s an extension23 Ofilcss diameter than the chamber into: which it opens, to receive and prevent injury to the point of thespur-insertedin the chamber. In Fig. 3

chamber 18; in a similar'mannerthe-point ot the spur 21' 1s ICCQIVCCl in said extension when said last-named-spur ispiacedin said chamber, after withdrawing-said spur 209E011 insertionin operative position in the chamber19. 'l Vhen the spur in the chamber'li, which ever-it may be, is not in use, the sanjie can be reversed in said chamber to locate its pointin safety in the extension 23 from the point of thespur 20 is shownv promoting: mto the extension 23 from the;

aXis for thepurposeof-loeating the spur in."

the eccentricallymlisposedchamber 19 at exactly the rightdistancefrom the associated marking.implement; In other words, the eccentrically-loeated chamber and the provision ior. rotatably adjusting the holder 1% enable saidspur to be veryiinely adjusted.

The marking-implement holder, of which mention has been made, comprises a yoke or bifurcated abutment head; 2% having at the rear end a shanl: 25 that fits the upper opening: in theright-hand clamp slite 8. This slide is mounted on and secured to the arm (3, and the shank 25 .is at right angles tosaid arm. The diameter of theshani: 25 i approximately the same as that of the rods 1 and 2, or of the holder 14, and said shankis hollow. The head 2% opens through the sides and front end thereof, and in the front of positioning right-hand slide 8, and after adjustment is securely clamped in position by means'of the nut 8 on the top of said slide. A draw head 27 is slidingly arranged in the abutment head 24, and the former has at the rear end a shank 28,that extends through the rear end of said abutment head and through the hollow shank 25 to receive a nut 29 behind said hollow shank, said first-namedshank being screw-threaded at its rear terminal to accommodate said nut.

When thus drawn forcibly rearwardly by,

the nut 29 the head 27 forces the pencil 31 into the notches 26 in the head 24:. In this manner and by this meansthe pencil is held firmly in place, but may be released, for removal by loosening the nut 29. Any desired angle may be given to the pencil by partially rotating the shank 25 in its slide 8, after loosening the nut 11 on top of said slide 8, said nut then being tightened again.

The implement holders are, of course, located on the same side of the rods 1 and 2, and the arm 6 is provided for the purpose the marking-implement holder approximately in the vertical plane with the spur holder which is parallel with the vertical plane of said rods. the marking implement would be located much to far from the rods 1 and 2, and out of proper relation to the spur, or else it would be necessary also to locate the spur holder too far from said rods.

Upon referring to Fig. 2 it will be seen that the marking-implement-holder clamp is set at g. For resetting purposes this clamp should be moved to the left into the position indicated by the dotted lines 32,

where the clamp registers with the first scale mark on the arm 6.

If the spur-holder clamp is on the top rod 1, as when along radius is required, it is placed at O, and the left-hand rod clamp is placed at the last mark on the lower rod 2. The reading in inches is now taken from the upper rod, as 11, the same being the sum of the nine inches on the lower rod and the two inches beyond on the upperrod. For any additionalfraction of an inch required, move theimplementclamp The head 27 may be projected forward of the notched ends of the Otherwise on the arm- 6 totheright until said clamp registers with the proper fraction mark on said arm, as -1-;-";-". p "j In Fig. 1 the pencil 31 is shown tilted in; such a manner'as toenable the point thereof to mark close up in a corner.

To set the instrument for a shorter. radius and with the spur-holder clamp mounted on ment points, either or both, to a fullnum ber of inches, employing for the purpose any scale at hand, such as the top rod- 1, which may be detached for such purposeit desired. 1 Then set the spur-holder clamp on the desired inch mark, and, if a'frac tion more be needed, set the marking-implement-holder clamp on the. required scale mark on thearm J v After the required adjustments have been made in any given case,'-the beam-compass is used in a similar manner'to any .o'thervinstrument of thekinda The chamfered or flattened parts3, 4c, and 5. of the rods 1 and 2, serve the usual purpose of assisting -in' preventing the parts and -members clamped thereto from turn ingthereon. j,- More or less change in theshape,;size, construction, and arrangement of some or all of the parts and members of this instrument may be made, without departing from the spirit of my invention or exceeding-the scope of what is claimed. I

What I claim asmy invention, and desire to secure by Letters Patent, is

1. In a beam-compass, rods, and clamps mounted on and'connecting said rods, each just the-operative spur and 'marking-imple of said clamps comprising a slide perforated to receive sald rods, and having at. the

ends centeringparts and threaded extensions,- gripping rings centered by saidparts and arranged to bear on said rods, nuts on said extensions, and springs interposed between said rings and said nut-s.

2. In a beam-compass, rods, clampsmounted on and connecting sa1d rods. other clamps mounted ontsaid rods, and impleers, and each ofsaid clamps comprising,

further, gripping rings adapted to'bearon said rods or one of said rods and a part of one of said holders, nuts, and springs interposed between said rings and said nuts, each slidehaving at the ends'centering parts for said rings, and"threadedextensionsfor said pnutg y v 1' .c.

' allehwith themain partvoftthe rod; clamps- 3 .;;In abeamrcompass-hrods one, of which.- is lbenteatone itemninala to; form. an. arm. palallel with the main part ofv the rod,'yadjuste gw-el mps; for saidtnods, anannplement 2 holder, meansto support;said'z holdenufromi said rods; andtani implement; lholderadj usta ably supported from ,saidxanm..

4. Inr v bBflHlrGQIIlPttSS5 IOdSaOIIG of .whicln; is bentatone terminal-to form amarmpan-J allel with the main-partyof thezrodaadjiists ing clamps for said rods, am implement; holder; meansrtomsupport said; holdern in front off-saidi rods, and an. implement ihOlClBDg adjustably; supported. fnonnsaid zarmi in a Y 'erticah plane with said; first named holder,

which: plane is, approximately. parallel \Vltllh the vertical plane ot'lsaidrods;

5. In abeaincompass, rodsioneiofwhiclr is :bent at oneierminal itol fornr an; arm par mountedaon andronnecting. said rods, ant

other clamp adapted to be mounted oneither ,ot'saidvrods, an implement.holdei attachable. to saidrlast -named clamp, still another clamp adapted to bQ DIOUHtGd OD-SEUCI EIIID;

and an implement holderattachable to i this-- clamp, said.- clamps con'iprising: slides some of: which are-perforated to receive said rods and others to receive said: rods and parts of.

said holders, and having at the endsoentering' parts and threaded extensions, grippingrings centereduby -said centering partsand arranged: to; bear on said rods and onsaid parts- Ofi said holders, nuts on said extensions, and springs interposed between-said;- rings and-said nuts. V

6. In a beam-compass, rods, adjustable clamping-means therefor, a transversely perforated slide adapted to be mounted atone-- terminal onhand secured to either of said rods, a, spur, a holder chambered to IGCBIVB" said spur, and receivable (111 the perforation in.- said' sli de, and damping means mountedontthe ot'her terminal of said slide to bear:

7 on said: holder, whereby the latter can bereceivable inthe perforation in saidfslide,

and clamping: means mounted on the other terminal oif'said'slideto-bear'on said holder, whereby the latter can be adjusted when said: clamping means are loosened.

8.- In a beam-compass, rods, adjustable clamping means therefor, spurs, a holder-- having therein eccentric and axial chambers for saidr spurs, said chambersopening" through opposite ends of said holder, and -the latter being split to afford gripping meansdon said spuns, and means: to clampsaid. holder toi either of; said rods, and capable. of being loosened to permit sald holderto be rotated on its axis.

9.. In. a..bea1n-oompass, spurs, a holderh-aving chambers i therein opening through opposite ends thereot'fon said spurs, said chambers atr theirinner. ends being extended to form receptacles oi smaller diametersthani the chambers to: receive the points of said spurs.

10; 'Ilhe combination, in -a beam-compass,

with rods,- and 7 adjustable; clamping means therefon, oi; a spur, a holder chambered to IGCGHFP .Stlld Splll; a sl1de-perforatedto re-- ceiveieither of said rods and said holder, 7

said. slide: having-:ench centering parts and threadedextensions, gripping rings centered bysaideparts and adapted-Jtobeanon the rod "and holder in: :the perforations in said slide,-fnutson said extensions, and springs interposed between said rings and said nuts.

11. Inabeam-compass, a-=rod a clamp mounted on said rod, and an implement h olden supported 1 by said clamp, said holder. comprising arecessed abutmenthead providedgwith' a hollow shank, a draw head in said abutment head and provided-with a shank. which extends through said hollow shank, and a nut -on said draw-head shank behind said hollow shank:

12. In a beam-compass, a rod; a clamp mounted on; said rod, and an implementholder supported for rotary adjustment by saith clamp,- said holdercomprising a re cessed abutment headprovided with a hollow shank, a draw head in said' abutment head and provided with a shank which extendsth'rough said hollow shank, and a nut OILSEI-id draw-head shank behind said hollow shank.

18. Ina beam-compass, a rod, a clamp mounted on said rod, andan implement.

holder supported by said clamp, said holder comprising-abifurcated abutment head having notches in the front ends of theparts of't l'ie bifurcation, and provided with a hollow shank, a perforated dranthead in said abutment head and provided 'with a shank which extends through said hollow shank,

and a nuton said draw-head shank behind" said hollow shank, the construction and arrangement of partsvand members being such that an object in said draw head may be forced into close contact with the notched endof said abutment head. i

14:; The combination, in a beam compass,

with a rod; of a perforated slide mounted onsaid rocL-a bifurcatedheadprovided with a hollow shank'passing throughthe perforation in said slide, the latter having a centering zpart and a threaded extension, a gripping ringcenteredby. said part and arranged to bear on said shank, a nut on ,said extenslon, a spring interposed between said ring and said nut, a draw head slidingly arranged in said bifurcated head and provided with a shank which extends through said hollow shank, and a nut on said draw-head shank hehind said hollow shank.

15. The combination in abeam-compass, with a rod, of a perforated slide mounted on said rod, a spur holder passing through the perforation in said slide, the latter having a centering part and a threaded extension, a grlpping ring centered by and arranged to bear on said holder, a nut on said extension, and a spring interposed between said ring and said nut.

16. 'In a beam-compass, rods, slides trans versely perforated to receive said rods, and clamping means mounted on the terminals of said slides to bear on said rods and rigidly secure said slides and rods together When said clamping means are tightened, the latter 20 consisting in part of resilient members.

I RODNEY B. WARE. 

